Cadmium selenide

Cadmium selenide
Names
	IUPAC name Selanylidenecadmium
	Other names Cadmium(2+) selenide; Cadmium(II) selenide; , cadmoselite
Identifiers
CAS Number	1306-24-7 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:50834 ;
ChemSpider	14101 ;
ECHA InfoCard	100.013.772
EC Number	215-148-3;
Gmelin Reference	13656
MeSH	cadmium+selenide
PubChem CID	14784;
RTECS number	EV2300000;
UNII	A7F646JC5C ;
UN number	2570
CompTox Dashboard (EPA)	DTXSID1061651 ;
	InChI InChI=1S/Cd.Se Key: AQCDIIAORKRFCD-UHFFFAOYSA-N ; InChI=1/Cd.Se/rCdSe/c1-2 Key: AQCDIIAORKRFCD-BBSQRNTLAE;
	SMILES [Se]=[Cd];
Properties
Chemical formula	CdSe
Molar mass	191.385 g·mol−1
Appearance	Black, translucent, adamantine crystals
Odor	Odorless
Density	5.81 g cm−3
Melting point	1,240 °C (2,260 °F; 1,510 K)
Band gap	1.74 eV, both for hex. and sphalerite
Refractive index (nD)	2.5
Structure
Crystal structure	Wurtzite
Space group	C6v4-P63mc
Coordination geometry	Hexagonal
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H312, H331, H373, H410
Precautionary statements	P261, P273, P280, P301+P310, P311, P501
	NIOSH (US health exposure limits):
PEL (Permissible)	[1910.1027] TWA 0.005 mg/m3 (as Cd)
REL (Recommended)	Ca
IDLH (Immediate danger)	Ca [9 mg/m3 (as Cd)]
Related compounds
Other anions	Cadmium oxide,; Cadmium sulfide,; Cadmium telluride
Other cations	Zinc selenide,; Mercury(II) selenide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Cadmium selenide is an inorganic compound with the formula Cd Se. It is a black to red-black solid that is classified as a II-VI semiconductor of the n-type. It is a pigment, but applications are declining because of environmental concerns.

Names


IUPAC name Selanylidenecadmium
Other names Cadmium(2+) selenide Cadmium(II) selenide , cadmoselite
Identifiers
CAS Number	1306-24-7^Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:50834^Y
ChemSpider	14101^Y
ECHA InfoCard	100.013.772
EC Number	215-148-3
Gmelin Reference	13656
MeSH	cadmium+selenide
PubChem CID	14784
RTECS number	EV2300000
UNII	A7F646JC5C^Y
UN number	2570
CompTox Dashboard (EPA)	DTXSID1061651
InChI InChI=1S/Cd.Se^Y Key: AQCDIIAORKRFCD-UHFFFAOYSA-N^Y InChI=1/Cd.Se/rCdSe/c1-2 Key: AQCDIIAORKRFCD-BBSQRNTLAE
SMILES [Se]=[Cd]
Properties
Chemical formula	CdSe
Molar mass	191.385 g·mol⁻¹
Appearance	Black, translucent, adamantine crystals
Odor	Odorless
Density	5.81 g cm⁻³
Melting point	1,240 °C (2,260 °F; 1,510 K)
Band gap	1.74 eV, both for hex. and sphalerite
Refractive index (n_D)	2.5
Structure
Crystal structure	Wurtzite
Space group	C_6v⁴-P6₃mc
Coordination geometry	Hexagonal
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H312, H331, H373, H410
Precautionary statements	P261, P273, P280, P301+P310, P311, P501
NIOSH (US health exposure limits):
PEL (Permissible)	[1910.1027] TWA 0.005 mg/m³ (as Cd)
REL (Recommended)	Ca
IDLH (Immediate danger)	Ca [9 mg/m³ (as Cd)]
Related compounds
Other anions	Cadmium oxide, Cadmium sulfide, Cadmium telluride
Other cations	Zinc selenide, Mercury(II) selenide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is ^YN ?) Infobox references